Kill griffawns until you get 20 common quest updates.
Kill Sabertooth looters until you get a quest update. They can be found near the western Antonica zoneline ( 1300, 0, -350 ) Copy/waypoint 1300, 0, -350 and may be found at the bottom of the crater at ( 1000, 0, -180 ) Copy/waypoint 1000, 0, -180.
Return to the Watcher of the Fields. Click the banner corresponding to the Chief to complete the quest.